Molding machine



Oct 17, 1933. v. s. FlREsToNE 1,931,185

MoLmNG MACHINE Filed June 1:5, 1931 6 sheets-sheet 1 g mi 1[1 OC. 17, 1933. V- ERES-TONE 1,931,185

MOLDING MACHINE Filed June 13, 1931 6 Sheets-Sheet 2 0d- 17 1933- v. s. FIREsToNF 1,931,185

HOLDING MACHINE Filed June 13, 1931 6 Sheets-Sheet 3 Oct. 17, 1933. v. s. FIREsToNE 1,931,185

HOLDING MACHINE Filed June 13, i931 6'Sheets-Sheet 4 oct. 17, 1933. v s, FlREs-TONE I .l 1,931,185

HOLDING MACHINE Filed June 13, 1931` 6 sheets-sneu 6 Patented ct. 1.7, 1933 UNITED STATES 1,931,185 v MOLDINGV MAcHrNE Vance S. Firestone, Freeport, Ill., assignor to Arcade Manufacturing Company, Freeport; Ill., a

corporation of Illinois' Application June 13, 19'31. seriai No. 544,243 A' 22 claims.` 01'. 22--33yH My invention relates to molding machines'of the type comprising a rotatably mounted carrier, as for example in the form of a table having the pattern secured' thereto,v on which the flask in 5 which the mold is formed, is carried and which, in the operation of the machine, is bodily raised and lowered, as for example and more particularly, in the operation of jolting the mold to conipact the sand therein, andas to certain features thereof more particularlyto the so-called mar'- ginally hinged type of molding machine.

One of my objects is to provide improvements in machines of the type above referred to, and more especially machines of the marginally hinged type, to the end that the means for rotating the rotatable carrier will be disconnected from the carrier during the jolting operation, but connectible therewith, preferably automatically, to exert torque for rotating the carrier. l

Another object is to simplify and render less expensive the manufacture of the 'portion of the machine comprising the cylinders formingparts of the jolting mechanism and the mechanism for ,separating the pattern from the mold.

Another object is to eliminate the inadequately' guided and frequently locked loose parts necessary in joltv roll-over machines asheretofore provided, together with the incident wear and expense in connection with the same. l

. Another object isto provide the parts of the' machine of such contour as to increase their strength and readily shed sand preventing entry thereof to the bearings and joints of the ma- J chine. i

Another object is to provide in amarginall'y hinged type of machine for the removing of all load and strain from the jolting mechanism in the positioning of the carrier for separatingV` the 40 pattern from the mold. y Y .i

, Another object isto provide, in a machine in which the parts carriedby the jolt piston are non-centered thereon, thus unsymmetrically loading the piston, for such distribution of the load on these jolt-parts as to counteract such unsymmetrical loading and render `,the total load on the fpiston substantially symmetrically disposed; and other objects as willbemanifest from the following description. y

Referring to the accompanying drawings: -V

Figure 1 is a viewin side elevation of a molding machine of the marginallyhinged carrier type embodying my invention, thisview showing by`fu1l 'lines the-positionoccupied bythe carrier when in position to lbe jolted and in dotted lines vrotating the carrier.

theeposition to which it is rolled over for the drawing of the pattern. l

. Figure 2 is a plan view of the machine.

Figure 3 is a broken view in side elevation, with `certain parts sectioned at the line 3`3 on Fig..2 60 y and viewed'in .the direction of the arrows, ofthe machine of the preceding figures, the parts being shown in the position illustrated in Fig. 1.

Figure 4 is an enlarged section taken at the line 4--4 on Fig. 1 and viewed in the direction of 65 the arrows. y l l, f

Figure 5 is a broken view in sectional elevation of the` machine showing the carrier in patterndrawing position. 1 e l 'l Figure 'Gis a section taken at the line 6*-6 on 70 Fig. 5 and viewed in the directionof thearrovts. Figure 'lis a perspective view of the rotatable carrier., `V l i V Figure 8 is a similar view of the jolt-'part car'. ried'by the jolt-piston of the.' machine and't'o which the carrier of Fig. I is marginally hinged; and y l '1 Figure 9, a similar view of thepower means for The particular illustrated'machine comprises 8-0 a base l0 shown as supported by wheels 11 and provided at one end with joltingmechanism comprising aA cylinderv l2 to which fluid-pressure for actuating this mechanism is supplied and a piston 13 movable up and down inthe cylinder 12 85 and provided with a platform 14 at its upper end from the marginal edge of which a skirt 15 depends, shedding sand from the body of the piston 13 and the cylinder 12. In accordance with com-v mon practice fluid pressure to raise the piston 13 is admitted into the cylinder' through apip'ev 16 and followingthe lifting of the piston is permit"-4 ted to vent, thus permitting the piston to fall' and effect, by its abrupt stoppingthe desired'jolting action, l these alternate operations of admit# ting fluid to the'cylinder 12 and venting the latter continuing until the operator, after the desired amount ofjolting has been effected, shuts off the `supply of lluid to. the cylinder V12. 100

vThe platform 14 is provided with horizontal, spacedapart arms 16 terminatinglin upwardly extending portions 17 in which'short, longitudinally-aimed, shafts l18 are journaled,V these shafts y projecting at their outer ends beyond the arms 105 16 and' beyond washers 19 on lthese shafts,` and connected at their inner Yends withdisk-heads y20 provided onVV their inner, opposed, surfaces with gibs Y21 radially disposed on thesefheads and having stop lugs 22 at their uppernds, considering 110 ted lines in this gure.

. the parts in thepositicn shown by full. lines in Fig. 1.

The carrier for the pattern and. for the flask shown at 23 and in which the mold is to be formed,

is represented at 24 and comprises a plate portiony 25 adapted to rest on the platform 14 in the joltingoperaticn, and lateraily extending arms 26V at which the carrier 24 is rigidly connected with the outer ends of the shafts 18, these arms having openings 27 therein to receive the shafts 18 which are keyed to the carrier.

It will thus be understood that inasmuch as the` carrier 24 is connected with the vplatform 14 through the shafts 18, and-the platform 14, in turn, is rigidly connected with the piston 13, the carrier is moved upv and down with the piston 13 in` thejolting movements of the latter, and that the carrier is adapted to be swung at its marginally hinged connection with the arms 16 fromthe jolting position represented by full lines in Fig. 1 to pattern-drawing,position represented by dot- Power-operated mechanismA for rotating the carrier selectively into the two positions referred to is provided, this mechanism comprising a cylinder 28 in. communication with any suitable source (not shown) of fluid pressure, through a Valved pipe 29 permitting the actuating fluid to enter the bottom of the cylinder 28 and exhaust therefrom under the control of the operator.

Slidable in the lcylinder 28 and actuated by the fluid pressure supplied to the latter, is a piston 30 connected, by a connecting rod 3l, with the crankat its outer face, the peripheral portions of thecollars being recessed as represented at, 4.1 at the opposite ends of the grooves 40.

In the position of the carrier just stated the gibs 2l extend slidingly in the grooves 40, both the gibs and the grooves being vertical. Thus the carrier 24,v together with the piston 13 and the parts carried thereby,k are free to slide up and down at the gibs 2-1, in the grooves40, whereby the' jolting ,y mechanism is operable withoutr moving the crank-shaft 38. However, when the piston 13 is in lowermost position and the piston 30 is operated to rotate the'crank-shaft r33 the coupling connection ofthe shaft 33 with the shafts 18, afforded by the intertting of the gibs 21 with the lwalls'of the grooves 40, causes torque to be applied to the shafts 18 for rotating the carrier 24.

The machine, at the side of the tur-novermechanism just described ropposite that at which the jolting mechanism is located, is provided with avertically movable iiask rest device represented generally at 42 and shown as of well known construction and provided to receive the flask containing the-mold and mounted on theV carrierv 24, in the swinging of the carrier from the position shown by full lines in Fig. l in which the mold is produced,'into the position shown by dotted lines in this figure, and by lowering the device 42 separate the pattern from the mold.

The device 42 is shown asformed of a body portion 43 Vsupporting vertically adjustable flaskrests 44, one at each side of the machine, the

-A yoke .member 52 .connected with the arms 49 portion 43 being' slidable vertically on rods 453 secured to the base 10 of the machine.'

The flask rest device is held normally in raised position as by the spring-tensioned mechanism shown and comprising coil-springs 46 located at opposite sides of the machine and operatively connected at one end with heads 4'? pivoted on the stationary frame of the machine and at their other end with arms-484 rigid on levers 49 pivoted` at 50 to the stationary frame of the machine, the" levers 49 at their' outer ends being connected with the body portion 43 of the flask-rest device by links 51 pivoted at their opposite ends to the levers 4.9 andl the body portion 43, respectively.

affords'means engageable by the operator, as by pressing downwardly against it, for vertically depressing thev flask-rest device against the tension of the springs 46 to lower the mold away from the pattern. 9

It is necessary that means be provided for stopping the rotation of the carrier 24, in moving it into pattern-drawing position, -when the carrier assumes a position at a right angle tothe path of vertical movement of the flask-rest delo@ vice, these means, in the construction shown, comprising the lugs 22 and the walls of the recesses 41 against which they upwardly engage, and stops, shown as in the form of threaded vertical studs 53, secured to lugs 54 on the housing 38 and having nuts 55 adjustable thereon and engageable bystop-surfaces 56 on the carrier. By this construction, as will be noted, the cantilever action of the carrier 24 is exerted on the stationary rigidhousing 38 through lugs 22 and the crank-shaft 110 33, thus relieving the jolt piston of force tending to'lift it, and its associated parts, vertically. v v In the jolting operationof the machine the carrier 24 occupies a position in which itflatwise rests on the platform 14-with the flask 23 positioned on the carrier 24 and filled with sand covering the pattern on the carrier, asshown by full lines in Fig. 1. l

After )the jolting operation has lbeen completed, thesand is struck off level with the top of the flask, ,more sand -being added to the flask, if necessary, and a bottomrboard 5'7 then applied to the position shown. The bottom board 57, flask 23 and carrier are then clamped'tightly together as bythe clamping means illustrated and comprising a bail 58 pivoted at eyes 59 on reduced portions 60 of the collars 39 and a manually operativev latch device 61 pivoted on the end of the bail and having a latching lug 62 adapted to hook under a cross-pin 63 on a stud rigid with the carrier, the bail having presser devices 64 forced into engagement with the top of the bottom board 57 upon manipulating the latch V61 to latching position.

The parts in vclamped position as stated are then swung to the inverted position shown by dotted ylines in Fig. 1 to deliver thelfiiask to the ask rest device, the carrier swinging Von the shafts 33 and the flask-clamp, on the collars 39. The latch lever 61` is then released from the pin 63 permitting the clamp to be swung upwardly out of the way and the flask loweredfrom the pattern on the carrier 24 by lowering the flask-rest device. f Y

As shown, and by preference, the cylinders 'l2 and 28 ofthe jolt and carrier-turnover mechanisms are formed as an integral structureas .by casting them in oneY piece, Vwhereby the number offseparate parts forming the mechanism are yre- 15G duced and possibility of these cylinders becoming out of alinement is prevented. p

v Furthermore in accordance with the preferred illustrated embodiment of my invention, the pattern-plate 'instead of being centered relative tothe jolt cylinder 12 is offset therefrom slightly to the right in Figs. 1 and 3, as represented, to substantially counterbalance the unsymmetrical load of the jolt partscarried by the piston 13, thereby relieving the piston 13 and cylinder 12 of the wear which would otherwise result.

While I have illustrated and described a particular construction embodying my invention, I

doV not Wish to be` understood as intending to4 of said jolting means for rotating said carrier and relative to which said carrier is movable in the jolting operation. Y y

2. A molding machine comprising a carrier for the flask, meansvfor jolting said carrier and on which said carrier is rotatably mounted, and

means for rotating said carrier comprising a power device and a` driving connection between said power device and carrier and formed ofv sections relatively movable in the jolting operation. -j y 3. A molding machine comprising Va carrier for the flask, means for jolting said carrier and on which said carrier is rotatably mounted, and

means for rotating said carrier comprising a rotatable shaft on the machine, means `for rotating said shaft, and a driving connection between said shaft and carrier and formed of` sectionsY relatively movable in the jolting operation.

4.*A molding machine comprising a carrier for the ask, meansfor jolting'said carrier and on which said carrier is rotatably mounted, and means for rotating said carrier comprisinga vrotatable 'shaft on the machine, means for rotating said shaft, and a driving connection between said shaft and carrier comprising portions operatively connected With'said shaft and carrier, said portions being relatively slidable inthe jolting of said carrier and relatively positioned to permit torque to be applied -to' said carrier for rotating the latter.

5. A molding machine comprising a rotatable carrier for the fiask, means for jolting said carrier 'and Vcomprising a movable member, rotatable elements journaled on said member and ,I connected with said carrier, a rotatable mem- Vjolting of said carrier and relatively positionedr 3 to permit torque to be" applied to said carrier for .rotating 4the latter. L

'7. A molding machine comprising a' marginally hinged carrier for the flask, means for jolting said carrier and on which' said carrier is hingedly mounted, and means. operating independently ofthe movement of said jolting means for rotating said carrier and relative to which said carrier is movable in the jolting" operation.

8. A molding machine comprisinga marginally hinged carrier for the flask, vmeans for jolting said carrier and on which said carrier is hingedly mounted, and means for rotating said carrier comprising a power device and a driving connection between'said power device andy carrier and formed of sections relatively movable in the jolting operation.

9. A molding machine comprising marginall ly hinged carrier for the `flask, means for jolting said carrier and on which said carrierfis hingedly mounted, and means for rotating said.

carrier comprisingA a rotatable shaft on the machine, means for rotating said shaft,l and a driving connection between said shaft and carrier and formed of sections relatively movable in thejoltingoperation.

l0. A molding machine comprising a marginally hinged carrier for the fiask, means for jolting `said carrier and on which said carrier is hingedly mounted, and means for rotating said carrier comprising a' rotatable shaft on the machine, means for rotating saidshaft, and a driving connectionbetween said shaft and carrier comprising portions operatively connected with said shaft and carrier, "said portions ybeing relatively slidableV in, the jolting of said carrier and relatively positioned to permit torque to be applied to saidv carrierfor rotating the latter.

1l. A molding machine comprising a marginall ly hinged vcarrier for the flask, means for jolting said carrier and comprising a movable member, rotatable elements journaled on saidmember and connected with said carrier, a rotatable member, means for rotating said rotatable member, and a driving connection betweensaid rotatable elements and said rotatable member and formed of Asections relatively movable in the jolting operation.`

12. A molding machine comprising a marginally hinged carrier for vthe flask, means for jolting said carrier and comprising a movable member, rotatable elementsl journaled on said niember and connected with said carrier, a rotatable member, means for rotatingsaid rotatable member, and a'driving yconnection between saidrotatable elements and. said rotatable member and comprising portions relatively slidable in the jolting of Vsaid carrier and relatively positioned to permit torque to 4be applied to said carrier for rotating the latter.

13. A molding machine lcomprising a marginally `hinged carrier for the flask,'means for jolting said carrier and comprising a movable'part to which said carrier is pivoted, means for roally hingedl carrier for the flask, means for jolting said carrier and comprising a movablepart to which said carrier is pivoted,`means for. ro-

tating said carrier on said movable part, and

means for ,stoppingrrotationof' said carrier into pattern-drawing position comprising` a stop on a stationary part of the machine upon which the overhanging portion of said carrier bears and interengaging portions adjacent said 'axis relieving upward thrust on said movablepart of said jolt means.

15. A Vmolding machinecomprising a marginally hinged carrier lor the flask, means for jolting said carrier'and comprising a movable part to which said carrier is pivoted, a rotatable member, means for rotating said member, means actuated by said rotatable member for rotating said carrier on said movable part and means for stopping rotation of said carrier int-o pattern-drawing position comprising a stop on a Vstationary part of the machine upon which the overhanging portion of said carrier bears and interengaging portions operatively connected with saidrcarrier andy said rotatable member for resisting upward thrust exerted by said carrier.

16. A molding machine comprising a rotatable carrier for the flask, means for jolting said carrier, means for rotating said carrier comprising a rotatable shaft on the machine, means for rotating said shaft, and a driving connection between'said shaft and carrier and formed kof sections relatively movable in the jclting operation, and means for stopping rotation of said carrier into pattern-drawing position comprising a stop on a stationary part of the machine upon which the overhanging portion of said carrier bears and interengaging portionson said sections mutually engaging for resisting upward thrust eX- erted by said carrier. f

17. A molding machine comprising a rotatable carrier for the iiask, means for jolting said carrier, means for rotating said carrier comprising a rotatable shaftvon the machine, means for rotating said shaft, and a driving connection between saidshaft and carrier comprising portions operatively connected with said shaft and carrier, said portions being relatively slidable in the jolting of said carrier and relatively positioned to permit torque to be applied to said carrierY for rotating the latter, and means forrotatably mounted on said movable member, and means operating independently ofthe movement of said first-named means for rotating said carrier and relative to which said carrier is movable in the jolting operation.

19. A molding machine comprising a marginally hinged carrier for the flask, means for jolting said carrier and comprising a movable member, said carrier being hingedto said 'movable member, and means operating independently of the vmovement of said iirst-named means for rotating said carrier and relative to which said carrier is movable in the jolting operation.

20. A molding machine comprising a rotatable carrier for the flask, means for jolting the car-l rier and comprising a movable member, and means'for rotating said carrier comprising means rotatable on said member and to which said carrier is connected and. means for rotating said third-named means comprising tongue and groove, relatively slidable elements connecting said third-named means and said fourth-named means so constructed and arranged as to permit of relative .sliding movement of said tongue and groove elements inthe operation of said jolt means, andto apply torque to said third-named means for rotating said carrier when said fourthnamed means are actuated.

21, A molding machine comprising a carrier for the flask, means for jolting the carrier and comprising a movable member, and means for rotating said carrier comprising means rotatable von said member and to which said carrier is marginally connected and means for rotating said third-named means comprising tongue and groove, relatively slidablev elements connecting said third-named means and said fourth-named means so constructed and arranged as to permit of relative siiding movement of said tongue and groove eiements in the operation of said jolt means, and to apply torque to said third-named means for rotating said carrier when said fourthnamed means are actuated.

22. A molding machine comprising a marginally hinged carrier for the flask, means for jolting said carrier and comprising a movable member having arms, shafts journaled in said arms and to which said carrier is connected, and means for rotating said shafts comprising a second shaft disposed between said rst-named shafts, means for rotating said vsecond shaft and driving connections betweenA said first-named shafts and said second shaft and formed of sections relatively movable in the jolting operation.

vANoE s; FIRESTONR 

